Rozwiąż równanie: 14c - c do kwadratu=1
14c-c²=1
c²-14c+1=0
Δ=b²-4ac=14²-4×1=196-4=192
√Δ=√192=8√3
c₁=[-b-√Δ]/2a=[14-8√3]/2=7-4√3
c₂=[-b+√Δ]/2a=[14+8√3]/2=7+4√3
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14c-c²=1
c²-14c+1=0
Δ=b²-4ac=14²-4×1=196-4=192
√Δ=√192=8√3
c₁=[-b-√Δ]/2a=[14-8√3]/2=7-4√3
c₂=[-b+√Δ]/2a=[14+8√3]/2=7+4√3